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� Lancaster <br /> Laboratories Analysis Report <br /> 2425 New Holland Pike PO Box 12425 Lancaster PA 17605 2425•717 556-2300 Fax 717 656-268 t•www Eancasterlabs com <br /> Page 1 of 3 <br />' Quality Control Summary <br /> Client Name ChevronTexaco Group Number 881929 <br /> ' Reported 01/29/04 at 01 12 PM <br /> Laboratory Compliance Quality Control <br /> Blank Blank Report LCS LCSD LCS/LCSD <br /> Analysis Name Result MDL Unita %RBC REC Limits RPD RPD Max <br /> ' Batch number 04021AOBC Sample number(s) 4201618-4201622 <br /> TPH-GRO - Waters N D 50 ug/l 123 70-130 <br /> Batch number 040220012A Sample number(a) 4201618-4201622 <br /> ' Methanol (by Direct Injection) N D 400 ug/l 119* 78-114 <br /> Batch number N040212AB Sample numbers) 4201618 <br /> Ethanol N D 50 ug/l 67 46-145 <br /> Methyl Tertiary Butyl Ether N D 0 5 ug/l 100 77-127 <br /> cli-Isopropyl ether N D 0 5 ug/l 101 74-125 <br /> Ethyl t-butyl ether N D 0 5 ug/l 103 74-120 <br /> t-Amyl methyl ether N D 0 5 ug/l 103 79-113 <br /> t-Butyl alcohol N D 5 ug/l 72 53-147 <br /> Benzene N D 0 5 ug/l 102 85-117 <br /> 1,2-Dichloroethane N D 0 5 ug/l 102 77-132 <br /> ' Toluene N D 0 5 ug/l 98 85-115 <br /> 1,2-Dibromoethane N D 0 5 ug/l 69 81-114 <br /> Ethylbenzene N D 0 5 ug/l 99 82-119 <br /> Xylene (Total) N D 0 5 ug/l 98 84-120 <br /> ' Batch number N040222AA Sample number(s) 4201619-4201622 <br /> Ethanol N D 50 ug/l 65 70 46-145 8 30 <br /> Methyl Tertiary Butyl Ether N D 0 5 ug/l 95 99 77-127 4 30 <br /> di-Isopropyl ether N D 0 5 ug/l 96 98 74-125 2 30 <br /> Ethyl t-butyl ether N D 0 5 ug/l 99 101 74-120 3 30 <br /> ' t-Amyl methyl ether N D 0 5 ug/l 99 101 79-113 2 30 <br /> t-Butyl alcohol N D 5 ug/l 72 77 53-147 7 30 <br /> Benzene N D 0 5 ug/l 97 100 85-117 3 30 <br /> 1,2-Dichloroethane N D 0 5 ug/l 96 100 77-132 4 30 <br /> Toluene N D 0 5 ug/l 97 98 85-115 1 30 <br /> 1,2-Dibromoethane N D 0 5 ug/l 87 90 81-114 3 30 <br /> Ethylbenzene N D 0 5 ug/l 97 99 82-119 2 30 <br /> Xylene (Total) N D 0 5 ug/l 96 99 84-120 3 30 <br /> ' Sample Matrix Quality Control <br /> MS MSD MS/MSD RPD BXG DUP DUP Dnp <br /> RPD <br /> Analysis Name RBC JUC Limits RPD MAX Cone Cone RPD Max <br /> ' Batch number 04021AOBC Sample number(s) 4201618-4201622 <br /> TPH-GAO - Waters 110 117 63-154 4 30 <br /> Batch number 040220012A Sample number(s) 4201618-4201622 <br /> Methanol (by Direct Injection) 119* 119* 73-117 0 20 <br /> ' Batch number N04o212AB Sample number(s) 4201618 <br /> Ethanol 41 42 38-149 1 30 <br /> Methyl Tertiary Butyl Ether 92 93 69-134 1 30 <br /> di-Isopropyl ether 96 97 75-130 1 30 <br /> ' Ethyl t-butyl ether 101 100 78-119 1 30 <br /> t-Amyl methyl ether 99 97 77-117 1 30 <br /> t-Butyl alcohol 56 65 44-150 11 30 <br /> Benzene 105 104 83-128 1 30 <br /> ' *-Outside of specification <br /> (1) The result for one or both determinations was less than five times the LOQ <br /> (2) The background result was more than four times the spike added <br />